Performance Optimization of Power Plant Waste Heat Using H2O-LiBr Absorption Refrigerant System
This paper examines the use of waste energy in a 3x1 MW Gas Engine Power Plant (GEPP) on Bawean Island, Indonesia. The feasibility method uses water-lithium bromide (H2O-LiBr) technology as absorption refrigeration technology. In addition, bananas are also used for cold storage to overcome waste energy utilization. The cold storage is placed in the 300 m3 area with a 100 kg load capacity for a banana with a temperature of 5oC, 85% humidity, 24 hours of operation, 1292 W cooling load, and 371 TR. This system is used because it utilizes a cheap energy source that dissipates heat from gas and has no ecological hazards, such as ozone layer depletion and global warming. The exhaust gas temperature is 500oC. Moreover, cooling loads for cold storage, which are used with thermodynamic models, and consistent fluid properties, performance, and size of cold storage were also investigated. The results obtained show that higher cold storage output comes from internal factors as compared to external factors. In addition, the absorption refrigerant with Tevaporation is 5oC, capacity 403 TR and Qabsorption is 984 kW, Qgenerator is 1066 kW, Qevaporation is 1411 kW, Qcondenser is 1493 kW, with an absorption coefficient of performance (COP) of 1.32 and power consumption of 158,25 kW. Furthermore, after calculations, analysis, and field experiments, it shows that the internal factor of the cooling load is higher than the external factor sourced from bananas in the cold storage. This phenomenon occurs probably due to the product being refrigerated, following the soar cooling capacity. Thus, the waste energy in PLTGU 3x1 MW has tried to be utilized by the refrigerant absorption system.
Auh, P. (1977). Survey of absorption cooling technology in solar applications. In Brookhaven National Lab. Report, no. BNL-50704, Upton, NY, USA, 1977.
Belman-Flores, J. L.-M. (2017). Thermal simulation of the fresh food compartment in a domestic refrigerator. Energies, 10(1), 128.
Boopathi Raja, V. &. (2012). A Review and New Design Options to Minimize the Capital and Operational Cost of Single Effect Solar Absorption Cooling System for Residential Use. Emerging Trends in Science, Engineering and Technology, 3–18.
Chaiwong, S. (2016). Effect of impact and vibration on quality and damage in the British strawberries. Doctoral dissertation, University of Essex, 2016.
Dudita, M. D.-F. (2017). Closed Sorption Seasonal Thermal Energy Storage with Aqueous Sodium Hydroxide. In Conference on Sustainable Energy, Springer, 239–246.
Ellabban, O. A.-R. (2014). Renewable energy resources: Current status, future prospects and their enabling technology. Renewable and Sustainable Energy Reviews, 39, 748–764.
Florides, G. K. (2003). Design and construction of a LiBr–water absorption machine. Energy Conversion and Management, 44(15), 2483–2508.
Fuller, R. (2000). Storing frozen food: cold store equipment and maintenance. In Managing Frozen Foods. Woodhead Publishing Series in Food Science, Technology and Nutrition, 213–232.
Hang, Y. &. (2010). Design and Analysis of an Integrated Solar Absorption Cooling and Heating System at Purdue University. In Energy Sustainability, 43956, 225–230.
Iranmanesh, A. &. (2012). Thermodynamic modelling of a double-effect LiBr-H2O absorption refrigeration cycle. Heat and Mass Transfer, 48(12), 2113–2123.
Jiang, L. W. (2000). Transient temperature performance of an integrated micro-thermal system. Journal of Micromechanics and Microengineering, 10(3), 466.
Kovacı, T. &. (2018). Energy and exergy analysis of a double-effect LiBr-H2O ab-sorption refrigeration system. International Journal of Energy and Environment, 9(1), 37–48.
Lansing, F. (1980). A two-dimensional finite difference solution for the transient thermal behavior of a tubular solar collector. Solar Energy International Progress, 42, 328–350.
Lefebvre, E. F. (2015). Lithium bromide crystallization in water applied to an inter-seasonal heat storage process. Chemical Engineering Science, 133, 2-8.
Mahlia, T. S. (2014). A review of available methods and development on energy storage; technology update. Renewable and Sustainable Energy Reviews, 33, 532–545.
Manu, S. C. (2018). Effect of Cooling Water on the Performance of Lithium Bromide–Water (LiBr–H2O) Absorption Based Heat Pump. In IOP Conference Series, Materials Science and Engineering,, 376(1), 012007.
Neetoo, H. &. (2015). Influence of Growth Temperatures of Salmonella and Storage Temperatures of Alfalfa Seeds on Heat Inactivation of the Pathogen during Heat Treatment. Journal of Food Processing and Preservation, 39(6), 1992–2000.
Ren, J. Q. (2019). Thermodynamic evaluation of LiCl-H2O and LiBr-H2O absorption refrigeration systems based on a novel model and algorithm. Energies, 12(15), 3037.
Somesh, S. S. (2019). A Comprehensive Review on LiBr–H2O Based Solar-Powered Vapour Absorption Refrigeration System. Advances in Interdisciplinary Engineering, 343–352.
Sutikno, J. P. (2018). Utilization of Solar Energy for Air Conditioning System. In EDP Sciences, MATEC Web of Conferences, 156, 03040.
Tershak, A. F. (1989). Apparatus for controlling a refrigerator in low ambient temperature conditions. Whirlpool Corp, U.S. Patent no. 4, 834(4), 169.
Van Hattem, D. &. (1981). Description and performance of an active solar cooling system using a LiBr-H2O absorption machine. Energy and Buildings, 3(2), 169–196.
Wang, K. A. (2011). State-of-the-art review on crystallization control technologies for water/LiBr absorption heat pumps. International Journal of Refrigeration, 34(6), 1325-1337.
Worsfold, D. (1997). Food safety behaviour in the home. British Food Journal, 99(3), 97–104.